Alpha PM904 Specsheet

Product Specification Sheet APS988 - Rev. 04/2016

PM904 Mini 'No-Phone-Bill' Control Unit With CabinetPM904 Mini 'No-Phone-Bill' Control Unit With Cabinet

Alpha CommunicationsAlpha Communications

42 Central Drive • Farmingdale • NY • 11735-1202 • Phone: [phone] • Fax: [phone] Central Drive • Farmingdale • NY • 11735-1202 • Phone: [phone] • Fax: [phone]

TOLL-FREE: [phone] • Web: AlphaCommunications.com • Email: [e-mail]-FREE: [phone] • Web: AlphaCommunications.com • Email: [e-mail]

Copyright © 1998-2 016 Alpha Communication s® - All Righ ts Reserved.

Due to c ontinuo us product i mprovement, all col ors, sizes, materials, finishes and sp ecifications are subject to change witho ut not ice.

'No Phone Line' Central Equipment

(fo r u se with T E903 NP o r TE9 04 NP Te leph o ne

Entry Sta tio n or with DP H1 00 W C o ncie rge Ph on e )

Required ComponentsRequired Components

TE903NP/TE904NP Surface Mount Telephone

Entry Syst em/Master

or DPH100W Concierge/Guard Telephone Station

PM904 Control Unit (48 lines)
RY912 Relay Board (1 per 12 lines/telephones)
CT925 Connect or Cable Assembly (1 per RY912)
SS106 or T1640 Transformer (1 required for each
PM904 and each TE903NP, TE904NP)

Optional ComponentsOptional Components

PC-25 Uninterruptable power supply (for PM904)

PM904 Mini 'No-Phone-Bill' Control Unit WithPM904 Mini 'No-Phone-Bill' Control Unit With

CabinetCabinet

The Alpha Communicat ions® PM904 Mini Control Unit with Cabinet
is designed to provide 'no phone line capability' when interfac ed
with the Alpha Communications® TE903NP, TE904NP or DPH100W
(concierge/guard) master/phone stations, up t o a maximum of 48
telephones (using up to 4 of t he RY912 Relay Boards).

FeaturesFeatures

Can be used with either rotary or touch-t one service
No monthly phone line rental fee
Provides intercom (from lobby) for tenants that do not
have outside telephone line service
Distinctive double ring differentiates between visitor
calls and incoming calls
Connect ion for guard/concierge phone
Multiple entrance capability
Only two wires to interfac e with lobby equipment
Call waiting feature
DOC and FCC approved

SpecificationsSpecifications

Dimensions:

PM904

10.50"W x 14.50"H x 6.50"D
(267mm) x (369mm) x (166mm)

Power Required:

110VAC with SS106 (pigtail) or T1640
(plug-in) Transformer

Architects' And Engineers' SpecificationsArchitects' And Engineers' Specifications

Control unit(s) shall be Alpha Communicat ions® model PM904 with
cabinet. Control unit(s) shall be c ompatible with the T E903NP,

TE904NP and/or DPH100W series lobby/conc ierge/guard stations.

For 'no phone line' service capability include all of the required
components of a st andard Telephone Entry System, plus: a PM904
Control Unit, RY912 Relay Boards (1 per 12 lines/telephones-max.
4 per PM904), and a CT925 Connector Cable Assembly (1 per

RY912). All equipment should be located in the telephone room.

Local phone c ompany shall provide the required RJ71C (12 line)
interface jack(s) required.